Phone · LG · V20 Mini
LG V20 Mini Charging Port Repair
Charging Port Repair guide for the LG V20 Mini
Before you begin
Tools
- Phillips #00 screwdriver
- Heat gun or hair dryer
- Suction cup
- Plastic opening picks
- Spudger
- Tweezers
- Soldering iron
- Desoldering braid
- SIM card eject tool
Parts / materials
- Replacement USB-C charging port
- Flux
- Solder
- Isopropyl alcohol (99%)
- Pre-cut rear cover adhesive tape
Safety
- Disconnect the battery before desoldering or working on internal electronics.
- Wear safety glasses when working with hot solder and heat sources.
- Work in a well-ventilated area to avoid inhaling soldering fumes.
- Handle hot tools carefully to prevent skin burns or component damage.
Overview
Step-by-step
- 1
Turn Off the Device
2 minPress and hold the power button, then tap Power Off on the screen. Ensure the device is fully shut down before proceeding.
- 2
Eject SIM and MicroSD Tray
1 minInsert a SIM eject tool into the hole on the side of the device. Push firmly to pop the tray out, then remove it completely.
- 3
Heat the Rear Glass
3 minUse a heat gun or hair dryer on low setting to warm the outer edges of the rear glass for 2 minutes. This softens the factory adhesive holding the back panel.
- 4
Attach Suction Cup
2 minPlace a suction cup on the lower half of the rear glass near the edge. Pull upward steadily to create a small gap between the glass and the body.
- 5
Slice the Back Cover Adhesive
4 minInsert a thin plastic opening pick into the gap created by the suction cup. Slide the pick around all four edges to slice through the adhesive.
- 6
Remove Rear Glass Panel
2 minCarefully lift the rear glass panel away from the frame. Set it aside on a clean, soft surface.
- 7
Unscrew Midframe Fasteners
3 minUse a Phillips #00 screwdriver to remove all visible screws securing the internal plastic midframe. Keep track of each screw location.
- 8
Pry Off the Midframe
2 minInsert the flat end of a spudger under the edge of the plastic midframe. Carefully pry upward around the perimeter to release the plastic clips and remove it.
- 9
Disconnect the Battery
1 minLocate the battery connector on the motherboard. Use a plastic spudger to gently pop the press connector straight up.
- 10
Disconnect Sub-Board Flex Cables
2 minUse a spudger to disconnect the main display and daughterboard flex cables attached near the bottom of the phone.
- 11
Unscrew the Daughterboard
2 minRemove the remaining Phillips screws securing the lower daughterboard assembly to the housing.
- 12
Lift Out Daughterboard
2 minInsert a spudger beneath the daughterboard and gently lift it out of the lower chassis.
- 13
Apply Liquid Flux
2 minApply a small amount of liquid soldering flux to the anchor pins and contact pads of the damaged USB-C port.
- 14
Desolder the Old Port
5 minApply a hot soldering iron tip with desoldering braid to absorb solder from all anchor pins and data pads. Carefully lift the port off with tweezers.
- 15
Clean the Circuit Pads
3 minClean remaining solder from the board pads using fresh desoldering braid, then wipe the area clean with isopropyl alcohol.
- 16
Solder the New Port
6 minPosition the new USB-C port precisely over the board pads. Solder each anchor pin and contact pad securely, ensuring no solder bridges form.
- 17
Reinstall the Daughterboard
2 minPlace the repaired daughterboard back into the chassis and tighten its retaining Phillips screws.
- 18
Reconnect Cable Connectors
2 minSnap the sub-board flex cable and battery connector back into their respective sockets on the motherboard.
- 19
Reattach the Midframe
3 minAlign the midframe cover over the components, press down until it snaps in place, and reinstall all perimeter screws.
- 20
Apply Adhesive and Close Back
4 minApply fresh pre-cut adhesive strips to the housing rim, align the rear glass, and press firmly around all edges to seal.
After your LG V20 Mini charging port repair
Power the V20 Mini back on and test the charging port repair function before you put every screw away. Check touch/display response, charging, cameras, buttons, and wireless as relevant to this repair. If something fails after closing the device, reopen carefully and reseat the connectors for this LG V20 Mini job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.
Keep learning
Explore more LG V20 Mini repair context in the encyclopedia, or open related DIY guides.

